Learn about some of the most common terms used at Peñoles and in the mining and metals industry.
Concentration of a desired mineral in a potentially mineable ore deposit. It is commonly expressed as a percentage (%), parts per million (ppm) or grams per ton (g/t). For example, a gold grade of 0.27 g/t indicates that for each ton of ore, it is possible to find 0.27 grams of this metal.
Mineral material deposited in rock fissures, cracks or crevices, whose composition is different from the substance in which it is embedded.